Evaluation of thermal conductivity for thermally insulated concretes

Tae Sup Yun, Yeon Jong Jeong, Tong Seok Han, Kwang Soo Youm

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Passive energy-saving houses and buildings made of thermally insulated materials become popular in recent construction practices to address the demanding energy needs and to reduce the consumption of hydrocarbon energy resources. Thermally insulated concretes represent alternative construction materials to improve the thermal efficiency in a wide range of residential and commercial buildings. This study presents the experimental results of thermal conductivity values of lightweight concrete materials at ambient temperature conditions. Various lightweight aggregates and glass bubbles are selected as surrogates and replacement materials for coarse aggregates in order to reduce the thermal conduction in concretes. The linear and plane heat source methods are implemented to quantitatively obtain conductivity values for tested specimens. Results highlight that the thermal conductivity of concretes can be effectively reduced with increasing fraction of lightweight aggregates critically depending on the type of lightweight aggregates, thereby playing an important role in the thermal insulation. The addition of micro-meter sized hollow glass bubbles further decreases the thermal conductivity of specimens while its impact is less pronounced than the lightweight aggregates. The measurement of strength corroborates the soundness of mechanical applicability of tested concretes specimens as well.

Original languageEnglish
Pages (from-to)125-132
Number of pages8
JournalEnergy and Buildings
Volume61
DOIs
Publication statusPublished - 2013 Mar 25

Fingerprint

Thermal conductivity
Concretes
Glass
Thermal insulation
Energy resources
Energy conservation
Hydrocarbons
Hot Temperature
Temperature

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

@article{d7008851efef47638eb259a81afeb051,
title = "Evaluation of thermal conductivity for thermally insulated concretes",
abstract = "Passive energy-saving houses and buildings made of thermally insulated materials become popular in recent construction practices to address the demanding energy needs and to reduce the consumption of hydrocarbon energy resources. Thermally insulated concretes represent alternative construction materials to improve the thermal efficiency in a wide range of residential and commercial buildings. This study presents the experimental results of thermal conductivity values of lightweight concrete materials at ambient temperature conditions. Various lightweight aggregates and glass bubbles are selected as surrogates and replacement materials for coarse aggregates in order to reduce the thermal conduction in concretes. The linear and plane heat source methods are implemented to quantitatively obtain conductivity values for tested specimens. Results highlight that the thermal conductivity of concretes can be effectively reduced with increasing fraction of lightweight aggregates critically depending on the type of lightweight aggregates, thereby playing an important role in the thermal insulation. The addition of micro-meter sized hollow glass bubbles further decreases the thermal conductivity of specimens while its impact is less pronounced than the lightweight aggregates. The measurement of strength corroborates the soundness of mechanical applicability of tested concretes specimens as well.",
author = "Yun, {Tae Sup} and Jeong, {Yeon Jong} and Han, {Tong Seok} and Youm, {Kwang Soo}",
year = "2013",
month = "3",
day = "25",
doi = "10.1016/j.enbuild.2013.01.043",
language = "English",
volume = "61",
pages = "125--132",
journal = "Energy and Buildings",
issn = "0378-7788",
publisher = "Elsevier BV",

}

Evaluation of thermal conductivity for thermally insulated concretes. / Yun, Tae Sup; Jeong, Yeon Jong; Han, Tong Seok; Youm, Kwang Soo.

In: Energy and Buildings, Vol. 61, 25.03.2013, p. 125-132.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Evaluation of thermal conductivity for thermally insulated concretes

AU - Yun, Tae Sup

AU - Jeong, Yeon Jong

AU - Han, Tong Seok

AU - Youm, Kwang Soo

PY - 2013/3/25

Y1 - 2013/3/25

N2 - Passive energy-saving houses and buildings made of thermally insulated materials become popular in recent construction practices to address the demanding energy needs and to reduce the consumption of hydrocarbon energy resources. Thermally insulated concretes represent alternative construction materials to improve the thermal efficiency in a wide range of residential and commercial buildings. This study presents the experimental results of thermal conductivity values of lightweight concrete materials at ambient temperature conditions. Various lightweight aggregates and glass bubbles are selected as surrogates and replacement materials for coarse aggregates in order to reduce the thermal conduction in concretes. The linear and plane heat source methods are implemented to quantitatively obtain conductivity values for tested specimens. Results highlight that the thermal conductivity of concretes can be effectively reduced with increasing fraction of lightweight aggregates critically depending on the type of lightweight aggregates, thereby playing an important role in the thermal insulation. The addition of micro-meter sized hollow glass bubbles further decreases the thermal conductivity of specimens while its impact is less pronounced than the lightweight aggregates. The measurement of strength corroborates the soundness of mechanical applicability of tested concretes specimens as well.

AB - Passive energy-saving houses and buildings made of thermally insulated materials become popular in recent construction practices to address the demanding energy needs and to reduce the consumption of hydrocarbon energy resources. Thermally insulated concretes represent alternative construction materials to improve the thermal efficiency in a wide range of residential and commercial buildings. This study presents the experimental results of thermal conductivity values of lightweight concrete materials at ambient temperature conditions. Various lightweight aggregates and glass bubbles are selected as surrogates and replacement materials for coarse aggregates in order to reduce the thermal conduction in concretes. The linear and plane heat source methods are implemented to quantitatively obtain conductivity values for tested specimens. Results highlight that the thermal conductivity of concretes can be effectively reduced with increasing fraction of lightweight aggregates critically depending on the type of lightweight aggregates, thereby playing an important role in the thermal insulation. The addition of micro-meter sized hollow glass bubbles further decreases the thermal conductivity of specimens while its impact is less pronounced than the lightweight aggregates. The measurement of strength corroborates the soundness of mechanical applicability of tested concretes specimens as well.

UR - http://www.scopus.com/inward/record.url?scp=84875141641&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84875141641&partnerID=8YFLogxK

U2 - 10.1016/j.enbuild.2013.01.043

DO - 10.1016/j.enbuild.2013.01.043

M3 - Article

AN - SCOPUS:84875141641

VL - 61

SP - 125

EP - 132

JO - Energy and Buildings

JF - Energy and Buildings

SN - 0378-7788

ER -